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Post by Steve Purves TBLR on Dec 11, 2011 17:02:51 GMT
Just considering my next project, What traction engines do you think can be made on a Myford super 7, I have plenty of space in the workshop but only an S7 for a lathe. I'm thinking 2" and above. I do have occasional access to a larger lathe and mill, but would like to do 90% of the work at home. What sort of kit would you need for example to build a 4" foster or the like? Cheers Steve
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Post by fostergp6nhp on Dec 11, 2011 18:31:00 GMT
As you have access to bigger go for it as a chap who i used to know had a Myford and he made a 4" Foster using the work lathe for the bigger diameter bits.
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Post by alanstepney on Dec 11, 2011 19:41:34 GMT
I built a 4" (freelance) on my ML7.
A (roughly made-by me) copy of the Rodney Big Turn enabled me to do the majority of work on the Myford, with just the odd piece done elsewhere. (I had access to a Colchester Mastiff at the time.)
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jasonb
Elder Statesman
Posts: 1,206
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Post by jasonb on Dec 11, 2011 20:58:35 GMT
You shoul dbe able to do just about everything on the myford except the flywheel and final drive of a 3", going upto 4" then the winding drum and a couple of the other larger gears will be over the capacity but most can still be done. 2" you will be able to do it all as nothing really above 9" dia if you go for finish cast or rolled & welded wheels.
Do you have a mill as well?
J
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Post by Steve Purves TBLR on Dec 11, 2011 22:12:13 GMT
Thanks for the replies chaps, I'm hoping for something like a 4" Burrell or Foster, I have the mill that mounts on the Myford but would also look at purchasing something standalone in the future. Until then I do have access to a large mill and lathe at work. Just out of interest, how much to boilers cost for these sized projects? Steel I assume? Cheers Steve
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Post by fostergp6nhp on Dec 12, 2011 17:49:39 GMT
At the GDSF i was quoted by IIRC Bell boilers for a 4" Foster boiler rated for 200psi working pressure a price including vat of £2050. 200psi as it was for a compound engine. Yes for a 4" engine use steel as its a lot cheaper than copper and wont bend in a misshap.
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Post by Deleted on Dec 13, 2011 21:04:19 GMT
I would suggest a 4" engine, a 4" Garret is a good alternative to a Foster, maybe a bit more robust. Try AJB for a steel boiler, it could be a bit less than the price already mentioned. The reason for suggesting a 4" scale miniature is that they are so much easier to run than smaller scales, if you intend to steam and rally the engine when you are finished. I am making a 6" Garret using a Bantam and a Bridgeport, which are doing most of the work, the few really big bits have been done on a T2000 which I have access to. Chris Gunn
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Post by albert on Apr 1, 2012 14:11:17 GMT
hello, I built 6"Ruston & Proctor (shorter than &Foster and amuch better T/E allround),more than 90% was on my Super7. problem parts:-diff centre--4? large gears--flywheel--cranckshaft,all done on Colchester
Look on CDMES web site for a Ruston photo
Albert
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